An antigen is a foreign substance that provokes an immune response in the body. Examples of antigens are: bacteria, pollen grains and large carbohydrates.
When you sneeze and it smells like pollen, it could be because you have inhaled pollen particles that are triggering your body's immune response, causing you to sneeze.
digestion
Snot can be helpful to the body. It traps foreign particles and helps the body get them out. It can also be a problem.
Phagocytes, such as neutrophils and macrophages, are leukocytes that respond to nonspecific foreign invaders. They engulf and destroy pathogens through phagocytosis, helping to protect the body from infections.
This is a neutrophil.
Antibodies are used to fight from foreign particles (pathogen generally) entering in the body of an individual.
They fight infections, and protect our body from foreign particles.
Antibody
Antigens are substances that incite your immune system to respond by producing antibodies. They include both foreign substances, such as pollen, and substances made by the body. Ones made by the body are non harmful.
The immune system reacts to substances as threats to the body health. When the allergens are inhaled the first response of the immune system is to attack and attempt to stop the particles from harming the body.
it contains histamines which work in the body to cause Allergies